Accession Number : AD0637442

Title :   COOLING OF GAS TURBINE COMPONENTS SUBJECT TO HIGH TEMPERATURES.

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Pahota,Karoly

Report Date : 26 MAR 1966

Pagination or Media Count : 15

Abstract : The construction of high-temperature gas turbines is a practical possibility; the turbines offer economy with internal cooling for rotor blades made of presently available materials. Internal cooling gives satisfactory results with both single-circuit and double-circuit cooling systems. In the single-circuit system, the heat carrier may be either air, water or saturated steam; in the double-circuit system, it is a liquid metal in the primary circulation and any of the heat carriers used in the single-circuit system in the secondary circuit. Water-cooling of the blades encounters serious design difficulties. It is economical to use air if the amount of heat to be taken off is small. It is economical to use saturated steam to remove small amounts of heat, especially in case of exhaust cooling systems. The dimensions of the radiator or the size of the heat-transfer area may be reduced by the use of cooling steam in double-circuit systems. In the case of higher output, or if a considerable amount of heat is to be removed, it is feasible to supply the heated (super-heated) steam from the cooling system to a waste-heat condensation turbine. In compounded steam/gas turbine installations, where the cooling system forms large amounts of steam, intermediate cooling-system super-heaters may also be used. (Author)

Descriptors :   (*GAS TURBINES, *COOLING), COMPRESSORS, COOLANTS, HUNGARY

Subject Categories : Thermodynamics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE